Background: Many studies have been carried out in modelling COVID-19 pandemic . However, region-wise average duration of recovery from COVID-19 has not been attempted; hence, an effort has been made to estimate state-wise recovery duration of India's COVID-19 patients . Determining the recovery time in each region is intended to assist healthcare professionals in providing better care and planning of logistics .
Methods: This study used database provided by Kaggle, which takes data from the Ministry of Health & Family Welfare . The simple Linear Regression model between incidence, prevalence, and duration was used to assess the duration of COVID-19 disease in various Indian states .
Results: The fitted model suits ideal for most of the states, except for some union territories and northeastern states . The average time to recover from disease was ranging from 5 to 36 days in Indian states/union territories except for Madhya Pradesh . Tamil Nadu has an average recovery time of 7 days with an value of 0.96, followed by Odisha, Karnataka, West Bengal, Kerala and Chhattisgarh and the average recovery duration was estimated as 7 , 13 , 17 , 11 , 14 and 12 days respectively . Conclusion: The average recovery from COVID-19 was ten or less days in twenty percentage of states, whereas in forty-four percentage of states/union territories had an average recovery duration between ten to twenty days . However, around twentyfour percentage of states/union territory recovered between twenty to thirty days . In the rest of Indian states/union territories, the average duration of recovery was more than thirty days.